Re: Open issues for HOT patch

Поиск
Список
Период
Сортировка
От Pavan Deolasee
Тема Re: Open issues for HOT patch
Дата
Msg-id 2e78013d0709190211i5e01a4bm1c3a205615f1f87@mail.gmail.com
обсуждение исходный текст
Ответ на Re: Open issues for HOT patch  (Simon Riggs <simon@2ndquadrant.com>)
Список pgsql-hackers


On 9/19/07, Simon Riggs <simon@2ndquadrant.com> wrote:

In your last post you mentioned multiple UPDATEs. Pruning multiple times
for successive UPDATEs isn't going to release more space, so why do it?


I guess the point is when you do the first update, there is enough free space
in the page and hence we won't prune the page. We run out of free space for
subsequent updates and want to prune, but now can't prune because executor
is holding a pin on the buffer.

Thanks,
Pavan

--
Pavan Deolasee
EnterpriseDB     http://www.enterprisedb.com

В списке pgsql-hackers по дате отправления:

Предыдущее
От: Heikki Linnakangas
Дата:
Сообщение: Re: Open issues for HOT patch
Следующее
От: Heikki Linnakangas
Дата:
Сообщение: Re: Open issues for HOT patch